Tag number basically notes what needles and jets were in the carb, which
you'll probably be changing anyway for your A-series setup. Other than
that, they're all basically the same.
One thing to note is the dashpot spring. They come in two varieties,
small (about 3/4 inch dia) for earlier carbs, and large (about 2 inch
dia) for the later carbs. If you need to ordr dashpot springs, jst make
sure you know what you have.
-=Chris
Chris King
http://home.comcast.net/~kvcbk/
<-----Original Message----->
From: Jim Rogers
Sent: 2/11/2005 12:03:14 PM
To: robertduquette@sympatico.ca;spridgets@Autox.Team.Net
Subject: Re: 1.5 inch SUs on 1275s
Robert -
I am sure the real experts will chime in, but I thought I might add in a
little bit.
I bought a pair of 1.5 HIF SUs and a stock intake manifold, both from a
MGB. No tags, but I simply measured across the carb intake - right at
1.5 inch. I had read (somewhere) about modifying the MGB manifold to fit
on the A-series head, so I gave that a try. Turned out very simple to do
and looked fairly stock (sleeper set-up).
Before I had the chance to run this set-up (bugeye was still in early
body work) I sold 1.5 SUs and modifed manifold on Ebay. I had
opportunity to pick up a Maniflow & single 1.75 HIF SU, which appealed
to me (Vizard recommendation & no balancing!). Works very well with my
1380.
Just my 2 cents
Jim Rogers
San Juan Capistrano, CA
Robert Duquette wrote:
>Hey guys and gals!
>
>Does anyone out there have 1.5 inch SUs on their 1275?
>
>If so, how do you make them fit? My Midget has a hump grafted in by the
PO to allow for the extra height. I now find myself wanting to add K&Ns
( probably conical ) to the mix as the foam in my pancake type filters
are disintegrating. I'm not sure yet if they'll fit. I would love to add
the Maniflow intake from APT for performance, but I get stuck with the
20 degree angle for the float bowls and I'm not sure that the SUs will
end up in the same place to fit in the hood hump.
>
>What have other people done?
>
>And, how can I tell what kind of SUs I have? They're tagless, but
they're supposed to be from a UK spec MGB.
>
>Thanks!
>Robert Duquette
>1967 RHD MG Midget
>1965 RHD AH Sprite ( still in pieces )
>http://www3.sympatico.ca/robertduquette/fleet_top_view.jpg
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